Power-driven pump



March 25, 1930. H. G.HOLMES POWER DRIVEN PUMP.

5 Sheets-Sheet 1 Filed March 5, 1927 INVENTOR fierberf 6. 170/0165 March 25, 1930.

H. e. HOLMES Filed March 3, 1927 s Sheets-Sheet 2 w a (m L ll March 25, 1930. 'H. G. HOLMES POWER DRIVEN PUMP 5 Sheets-Sheet 5 Filed March 3, 1927 QJ V INVENTOR fierber/ G iz o/meJ. BY

Patented Mar. 125, 4930 when HERBERT G. HOLMES, F LANSING, MICHIGAN, ASSIGNOR T0 NOVO ENGINE COMPANY, OF LANSING, MICHIGAN POWER-DRIVEN PUMP Application filed March a,

This invention relates particularly to flood oiled power driven pumps and to improved lubricating means.

The objects of the invention are:

First, to provide an improved pump construction lending itself to flood oiling.

Second, to provide an improyed flood oiling device. 1

Objects relating to details and economies 0 of my invention will definitely appear from the detailed description to follow; The invention is clearly defined and pointed out in the claims.

A structure embodying the features of my invention is clearly illustrated in the accompanying drawings forming a part of this application, in which:

Fig. 1 is a detail side elevation view of a pump, parts being broken away and the pump, gear part being in sectional elevation on irregular line 11 of Figs. 2 and 7 Fig. 2 is a detail sectional plan view of the pump gear and housing taken on line 2-2 of Fig. 1.

Fig. 3 is a detail perspective view of the gear and housing showing the oiling devices, the housing cover being removed, taken on line 33 of Figs. 4 and 5.

Fig. 4 is an enlarged detail sectional elevation view taken on line 44 of Fig. 2.

Fig. 5 is a similar enlarged detail sectional elevation View taken on line 55 of Fig. 2.

Fig. 6 is an enlarged detail transverse sectional elevation view of the flood oiler pinion and par of the main gear taken ,on line 6 6 of Fig. 2.

Fig. 7 is a detail sectional view through the cross head and guides on the irregular section line 7 7 of Fig. 1.

Fig. 8 is a detail plan View of the cross head detached showing the oil grooves and also the oil hole which delivers to the pitman bearin". The parts will be identified by their numetals of reference which are the samein all views. v

1 is the base which carries the usual construction of piston pump 2. 3 is the gear housing forming the oil reservoir 31. 4 is the cross head guide or ways made integral with 1927. Serial No. 172,427.

the housing 3. 5 is the cross head, the top side and bottom side of whichare circular in cross section. 6 is the piston rod connected to the cross head. I

7 is the driving gearand 8 the main pum gear. 9 is the crank shaft on which the main gear issecured and 10 is the crank formed integral with the said crank shaft. 11 is the cross head guide 4.

The driving gear is carried on driving shaft 71 which is carried in journal boxes 72, 72. The journal boxes are provided with oil cups 73, 7 3, respectively with passages 7 4 and 74 leading into the under side of the bearings. The troughs 13, 13 are mitered from an apex at the center and extend to these bearings, the troughs being perforated to deliver oil downwardly into'the same.

The crank shaft 9 is supported in bearings 91, 91 having 'oil holes 92, 92 and also receive oil from perforations in the oil trough directly above the same, the trough 13 being perforated at its high point to permit oil to drop into the bearing at that side. The trough 13 is perforated at its forward end to drop into the oil hole 92, see Fig. 5. f

The right hand oil trough 13 also deliv rs into passage 14 which delivers out to the cross head oil reservoir 14, see Figs. 2 and 4 The oil chamber 14 is perforated at 141 and delivers oil onto the cross head 5. The cross head 5 contains oil grooves 52 at top and bottom and is perforated at 53 to deliver oil downwardly to the oil hole 11 to the pitman bearing.

The oiling pinion 12 is especlally constructed to deliver a flood of oil to. the bearing. Longitudinally through each tooth is a perforation 122 and centrally and radially outward through each tooth connected to this passage 122 is a passage 123 and as before with the main gear 8. The oil reservoir 31 is at the bottom so that the main gear picks up the oil which is carried between the gear teeth and when the same meshes with the oiling pinion 12 the oil is discharged forcibly outward in both directions by being compressed inwardly through the aperture 123 at the center.

The oil is thus flooded into the troughs 13 and 13 which are made elevated or with an apex at the center and sloping downwardly toward each end. As the troughs are full of oil the same passes down to the bearings as already pointed out. A part of the oil flows to the cross head oil chamber 14 where it passes down through aperture 14' to the cross head 5 into the grooves 52 and through the aperture 53 into the oil holes 11 in the pitman 11 and into the pitman cross head hearing. The crank pin is oiled by some of the oil dropping onto the same directly from the, oiling pinion as it passes therearound in making its stroke. It also dips into the oil in the oil well beneath.

From this description it will be seen that my improved pump is completely oiled by a flood oiling system and that no oil cups or other feeding means other than I have illustrated are required. The oiling of the pump is entirely automatic so long as there is asufiicient supply in the well. It will be seen that the system is not a splash oiler because the speed of the pump is not sufficient for that purpose.

I have shown all parts of the pump oiled by my improved system. The bearings below might be oiled in this way and other means be provided for the cross head. It is very clear that any sort of conduit might be provided for carrying the oil that is discharged by my improved flood oiling pinion.

My improved flood oiling pinion structure is adapted for use wherever comparatively slow moving gears are to be oiled.

The particular design I have shown is especially well adapted to the pump gear and ,I wish to claim the same specifically and I wish also to claim the invention broadly as pointed out in the appended claims.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a gear driven pump, the combination of a piston pump with cross head on cross head ways, a gear housing with oil reservoir at the bottom, a driving gear, a main driven gear dipping into the oil space, a crank shaft to which said main gear is connected, a cross head with guides with cross head oil reservoir at the top and pitman connecting the crank to said cross head, oil troughs at each side of the gear housing with elevated central part and passages delivering to the bearing surfaces, and an oiling pinion meshing with the top of said main gear, said pinion being provided with longitudinal holes thro gh its teeth with central radial oil receiving apertures whereby the oil carried up by the main gear will be discharged forcibly and laterally to the troughs to flood oil the various bearings, as specified.

2. The combination of a pump, gearing for driving the same, a housing for the said gear, oil troughs with conduits supported on the housing at each side, and an oiling pinion meshing with the upper side of one of said gears, said pinion being provided with longitudinal holes through its teethwith central radial oil receiving apertures whereby the oil carried up by the main gear will be discharged forcibly and laterally to the troughs to flood oil the various bearings, as specified.

3. In a flood oiling device, the combination of a gear, an oil reservoir into which the said gear dips, and an independent oil flooding pinion meshing with said gear, which pinion is cross perforated and longitudinally perforated with oil receiving and distributing bores, as specified.

4:. The combination of a pump, a main gear for driving the same, a housing with oil reservoir into which said main gear dips, an independent oiling pinion meshing with the upper side of said main gear, said pinion being provided with oil-receiving apertures and oil discharge passages whereby the oil carried up by the main gear will be discharged laterally by the coaction of the pinion and gear for oiling the various bearings.

. 5. The combination of a pump, a main gear for driving the same, a housing with oil reservoir into which said main gear dips, an independent oiling pinion meshing with the upper side of said main gear, said pinion being provided with oil-receivin apertures and oil discharge means whereby the oil carried up by the main gear will be discharged laterally by the coaction of the pinion and gear for oiling the various bearings.

In witness whereof I have hereunto set m hand.

y I HERBERT G. HOLMES. 

